package com.appkubes.fintech.restful.application.pay.common.utils;



import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * @author ocean
 * @time 2019-12-23 16:43
 * 功能：
 **/
public class ParamsUtil {
    /**
     * 获取请求参数中所有的信息
     *
     * @param request
     * @return
     */
    public static Map<String, String> getAllRequestParam(final HttpServletRequest request) {
        Map<String, String> res = new HashMap<String, String> ();
        Enumeration<?> temp = request.getParameterNames();
        if (null != temp) {
            while (temp.hasMoreElements()) {
                String en = (String) temp.nextElement();
                String value = request.getParameter(en);
                res.put(en, value);
                //在报文上送时，如果字段的值为空，则不上送<下面的处理为在获取所有参数数据时，判断若值为空，则删除这个字段>
                if (null == res.get(en) || "".equals(res.get(en))) {
                    res.remove(en);
                }
            }
        }
        return res;
    }

    /**
     * 判断参数  如果 获取params里面key为strings的数据
     * @param params
     * @param strings
     * @return
     */
    public static boolean paramCheck(Map<String, String> params, String[] strings) {
        for (String key:strings) {
            if(StringUtils.isBlank (params.get (key))){
                //校验失败
                return true;
            }
        }
        //校验通过
        return true;
    }


    /**
     * 将request中的参数转换成Map
     *
     */

    public static Map<String, String> convertRequestParamsToMap(HttpServletRequest request) {
        Map<String, String> retMap = new HashMap<String, String>();
        Set<Map.Entry<String, String[]>> entrySet = request.getParameterMap().entrySet();
        for (Map.Entry<String, String[]> entry : entrySet) {
            String name = entry.getKey();
            String[] values = entry.getValue();
            int valLen = values.length;
            if (valLen == 1) {
                retMap.put(name, values[0]);
            } else if (valLen > 1) {
                StringBuilder sb = new StringBuilder();
                for (String val : values) {
                    sb.append(",").append(val);
                }
                retMap.put(name, sb.toString().substring(1));
            } else {
                retMap.put(name, "");
            }
        }
        return retMap;
    }

}
